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Christoph Hellwig 06e9552f5f x86/pci-dma: remove the experimental forcesac boot option
Limiting the dma mask to avoid PCI (pre-PCIe) DAC cycles while paying
the huge overhead of an IOMMU is rather pointless, and this seriously
gets in the way of dma mapping work.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2018-05-28 12:48:16 +02:00
arch x86/pci-dma: remove the experimental forcesac boot option 2018-05-28 12:48:16 +02:00
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Documentation x86/pci-dma: remove the experimental forcesac boot option 2018-05-28 12:48:16 +02:00
drivers x86/pci-dma: remove the experimental forcesac boot option 2018-05-28 12:48:16 +02:00
firmware
fs Changes since last update: 2018-05-01 09:11:45 -07:00
include core, dma-direct: add a flag 32-bit dma limits 2018-05-28 12:46:54 +02:00
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lib core, dma-direct: add a flag 32-bit dma limits 2018-05-28 12:46:54 +02:00
LICENSES
mm arch: remove the ARCH_PHYS_ADDR_T_64BIT config symbol 2018-05-09 06:56:33 +02:00
net net: remove the PCI_DMA_BUS_IS_PHYS check in illegal_highdma 2018-05-07 07:15:41 +02:00
samples
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tools PCI: remove PCI_DMA_BUS_IS_PHYS 2018-05-07 07:15:41 +02:00
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MAINTAINERS dma-mapping: provide a generic dma-noncoherent implementation 2018-05-19 08:46:12 +02:00
Makefile Linux v4.17-rc3 2018-04-29 14:17:42 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.